CN116424045A

CN116424045A - Self-adaptive adjusting device for chassis suspension of skateboard

Info

Publication number: CN116424045A
Application number: CN202310516347.0A
Authority: CN
Inventors: 孙琦; 侯瑾; 陈寅; 程康; 叶晓明
Original assignee: Dongfeng Motor Corp
Current assignee: Dongfeng Motor Corp
Priority date: 2023-05-09
Filing date: 2023-05-09
Publication date: 2023-07-14

Abstract

The application relates to a self-adaptive adjusting device of a sliding plate chassis suspension, which belongs to the technical field of vehicle chassis and comprises a suspension mechanism, a limiting mechanism and a connecting unit, wherein the suspension mechanism is used for transmitting torque and force generated by a frame and wheels; according to the sliding plate chassis, the sliding plate chassis can be quickly adjusted to the upper vehicle bodies with different weights, the sliding plate chassis can be adjusted to the corresponding gesture height through the same structure, the working efficiency of the sliding plate chassis is improved, the driving safety of a vehicle is improved, the complexity of the device is reduced, the technical threshold is avoided, and the suspension system serving as the sliding plate chassis has larger design limit on the upper vehicle body.

Description

Self-adaptive adjusting device for chassis suspension of skateboard

Technical Field

The application relates to the technical field of vehicle chassis, in particular to a self-adaptive adjusting device for a skateboard chassis suspension.

Background

The scooter chassis integrates the suspension, braking, steering, power and other systems on the original automobile on the chassis in a modularized mode, and corresponding modules can be changed according to the requirements of different automobile types, so that the development period is shortened, the decoupling development of the upper automobile body and the lower automobile body is realized, and the scooter chassis is mainly called as the scooter chassis.

The first prior art is:

the static balance height of the vehicle body is maintained unchanged, and the vehicle body is raised and lowered steplessly through an air spring between the vehicle body support and the vehicle axle base, a rotary air valve connected with the air spring through a pipeline, and a hydraulic cylinder which is matched with the rotary air valve and can enable the air spring to be inflated, maintained unchanged and deflated.

Or the height posture is adjusted through the hub motor, the steering knuckle, the double trailing arms, the steering arms, the shock absorber, the rotation angle sensor, the first connecting rod and the second connecting rod.

In the first prior art, more space in the height direction is structurally occupied, multiple control systems such as electricity, liquid and gas are involved, the technical threshold is high, and the design limit of a suspension system serving as a skateboard chassis on an upper vehicle body is large.

And the second prior art is as follows:

the suspension height can be electrically controlled and regulated through the suspension regulating device, the single torsion bar suspension and the double torsion bar suspension, and the running requirements of different road conditions such as expressways, off-road roads and the like are met.

The second prior art relates to an electric control and hydraulic control system, which has complex structure and higher fault risk and is not suitable for the distinction and quick switching of an upper vehicle body under the use scene of a skateboard chassis.

In summary, when the chassis of the skateboard in the prior art flexibly switches different upper vehicle bodies, the height postures of the suspension frame cannot be correspondingly adjusted according to the upper vehicle bodies with different types and different rated weights, so that the same chassis can realize proper ground clearance when being matched with the upper vehicle bodies with different weights, the running safety is ensured, and the structure is complex.

Disclosure of Invention

The embodiment of the application provides a self-adaptive adjusting device for a chassis suspension of a skateboard, which is used for solving the problem that the existing skateboard chassis in the related art is inconvenient to adjust the height postures of the upper vehicle bodies with different weights.

The application provides a skateboard chassis suspension self-adaptation adjusting device, include

A suspension mechanism for transmitting torque and force generated by the frame and wheels;

the limiting mechanism is used for limiting the upper vehicle bodies with different weights to the corresponding heights;

and the connecting unit can synchronously limit the torque and the force transmitted by the limiting mechanism to the suspension mechanism.

In some embodiments, the suspension mechanism and the spacing mechanism are both disposed on the frame.

In some embodiments, the suspension mechanism includes an upper suspension swing arm, a lower suspension swing arm, and a shock absorber disposed between the upper suspension swing arm and the lower suspension swing arm.

In some embodiments, the suspension upper swing arm is hinged with the frame through a first hinge shaft;

the suspension lower swing arm is hinged with the frame through a second hinge shaft.

In some embodiments, one end of the shock absorber is hinged with a first hinge shaft of the swing arm on the suspension;

the other end of the shock absorber is hinged with the swing arm on the suspension.

In some embodiments, the spacing mechanism comprises an upper fixed plate and a lower spacing plate;

the lower limiting plate is hinged with the frame through a third hinge shaft.

In some embodiments, the upper fixing plate is provided with a positioning hole.

In some embodiments, the limiting mechanism further comprises

The limiting pin is arranged on the upper vehicle body and can pass through the positioning hole to contact the lower limiting plate.

In some embodiments, the connection unit is a torsion bar spring.

In some embodiments, one end of the torsion bar spring is hinged with the second hinge shaft, and the other end is hinged with the third hinge shaft.

The embodiment of the application provides a self-adaptive adjusting device for a chassis suspension of a skateboard, which is used for enabling a limiting pin to pass through a positioning hole in a corresponding position on an upper fixing plate on a chassis frame to contact a torsion bar suspension system of the chassis when the weight of a vehicle body is moderate.

Under the effect of vehicle gravity, the frame has the trend of sinking, and the wheel supports subaerial this moment, and the wheel center is static relatively, and consequently the swing arm is static relatively under the suspension, is close to the one side of frame, and the whole trend of producing around the rotatory trend of the interior second articulated shaft of swing arm under the suspension, torque loading to torsion bar spring front end this moment, transmits the terminal through torsion bar spring, makes lower limiting plate produce rotatory trend.

Meanwhile, the lower limiting plate is abutted against the upper vehicle body limiting pin and is limited to rotate, so that torsion is generated by deformation of the torsion bar spring, the torsion bar spring is balanced with the torque of the vehicle weight acting on the hinging in the lower swing arm of the suspension, and the vehicle is in an idle load static balance state under the support of the suspension system.

When the weight of the vehicle body is overweight, the spacing pin with longer assembly length is used, as the fixed position of the upper vehicle body on the vehicle frame is consistent, the lower spacing plate is pressed lower by the longer spacing pin, under the condition that the position of the lower swing arm of the suspension is kept unchanged, the torsion bar spring becomes larger, the generated torsion force is larger, the weight of the heavier upper vehicle body is exactly counteracted, the ground clearance of the chassis is kept unchanged, and the situation that the appearance posture and the trafficability of the whole vehicle are influenced by the chassis is prevented from being pressed lower by the heavier upper vehicle body is avoided.

When the weight of the vehicle body is lighter, the lower limiting plate is lifted by the shorter limiting pin because the fixed position of the upper vehicle body on the vehicle frame is consistent, and the torsion force generated by the torsion bar spring is smaller under the condition that the position of the swing arm is unchanged under the suspension, so that the weight of the lighter upper vehicle body is just balanced, the ground clearance of the chassis is kept unchanged, and the chassis is prevented from being lifted to be higher by the lighter upper vehicle body to influence the appearance posture and the travelling performance of the whole vehicle.

The scooter chassis can be quickly adjusted to the upper scooter bodies with different weights, the scooter chassis can be adjusted to the corresponding gesture height through the same structure, the working efficiency of the scooter chassis is improved, the driving safety of the scooter is improved, the complexity of the scooter is reduced, the technical threshold is avoided to be higher, the design limit of the scooter body is larger by a suspension system serving as the scooter chassis, the cost and the failure rate are lower, the scooter chassis is more reliable in a high-strength use environment, and the switchover reaction speed is faster.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram provided in an embodiment of the present application;

FIG. 2 is a schematic view of a limiting mechanism provided in the present application;

FIG. 3 is a schematic view of a first connection between an upper body and a chassis;

FIG. 4 is a schematic view of the structure of the stop pin provided in the present application when the upper body weight is moderate;

FIG. 5 is a second schematic view of the connection of the upper body to the chassis;

FIG. 6 is a schematic view of a stop pin provided in the present application when the weight of the upper body is heavy;

FIG. 7 is a third schematic view of the connection of the upper body to the chassis;

fig. 8 is a schematic view of the structure of the stop pin provided when the upper car body is lighter in weight.

1. A frame; 2. a limiting pin; 3. a first hinge shaft; 4. a second hinge shaft; 5. a third hinge shaft; 6. an upper fixing plate; 7. positioning holes; 11. a suspension upper swing arm; 12. a damper; 13. a suspension lower swing arm; 14. a torsion bar spring; 15. and a lower limit plate.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

The embodiment of the application provides a self-adaptive adjusting device for a chassis suspension of a skateboard, which can solve the problem that the existing suspension is inconvenient to adjust the height postures of different upper vehicle bodies.

Referring to fig. 1, an embodiment of the present application provides a device for adaptive adjustment of a chassis suspension of a skateboard, including

Suspension mechanism, stop gear and connecting unit.

When the vehicle is under the action of gravity, the frame 1 has a tendency of sinking, and the wheels are supported on the ground, and the wheel center is relatively static, so that the sinking torque and force generated by the weight of the vehicle body are transmitted to the limiting mechanism through the connecting unit.

The limiting mechanism is used for limiting the upper vehicle bodies with different weights to be at the corresponding heights, the weights of the different upper vehicle bodies are different, and when the suspension mechanism sinks, the height of the vehicle bodies is limited through the limiting mechanism, so that the phenomenon that the vehicle bodies sink without lower limit is avoided, the vehicle bodies are too low, and the vehicle body posture is located in an unsafe range.

The connecting unit can enable the limiting mechanism to synchronously limit torque and force transmitted by the suspension mechanism, and the phenomenon that the limiting mechanism cannot synchronously limit the suspension mechanism is avoided, so that the suspension mechanism cannot transmit torque and force in a lower limit mode, and the posture of a vehicle body is too low.

In this embodiment, the suspension mechanism and the limiting mechanism are both disposed on the frame 1, the suspension mechanism and the limiting mechanism are disposed at two ends of the frame 1 and are spaced apart from each other, and the connection unit is disposed between the suspension mechanism and the limiting mechanism for connection.

In some alternative embodiments, referring to fig. 1-2, the suspension mechanism includes an upper suspension swing arm 11, a lower suspension swing arm 13, and a shock absorber 12 disposed between the upper suspension swing arm 11 and the lower suspension swing arm 13.

Under the action of the gravity of the vehicle, the frame 1 has a sinking trend, at the moment, wheels are supported on the ground, the wheel center is relatively static, the suspension lower swing arm 13 rotates and rotates by utilizing the second hinge shaft 4 under the action of the weight of the vehicle body, the rotation direction faces the frame 1, the second hinge shaft 4 is coaxially hinged with the torsion bar spring 14, the torque loading at the moment is transferred to the torsion bar spring 14, the torsion bar spring 14 is driven to synchronously rotate, and then the torsion bar spring 14 drives the third connecting shaft 5 which is synchronously hinged with the other end to rotate, so that the limiting pin 2 limits the third connecting shaft.

In this embodiment, swing arm 11 articulates through first hinge axle 3 with frame 1 on the suspension, and swing arm 11 is triangle-shaped on the suspension, and the base both sides all are provided with first articulated ear, are fixed with two sets of first articulated assembly on the frame 1, and first articulated assembly includes two relative first fixed plates that set up, and first articulated ear sets up between two first fixed plates, then passes the articulated through first hinge axle 3.

The suspension lower swing arm 13 is hinged with the frame 1 through a second hinge shaft 4, the suspension lower swing arm 13 is triangular, two sides of the bottom edge are provided with second hinge lugs, two groups of second hinge assemblies are fixed on the frame 1, each second hinge assembly comprises two second fixing plates which are oppositely arranged, and the second hinge lugs are arranged between the two second fixing plates and then penetrate through the second hinge shaft 4 to be hinged.

In this embodiment, one end of the damper 12 is hinged to the first hinge shaft 3 of the upper suspension arm 11, and the other end of the damper 12 is hinged to the upper suspension arm 1.

The notch is formed in the upper suspension swing arm 11, the fourth hinge shaft is arranged in the notch, the shock absorber 12 is hinged with the notch of the upper suspension swing arm 11 through the fourth hinge shaft, when the frame 1 drives the lower suspension swing arm 11 to rotate, the shock absorber 12 can synchronously rotate along with the rotation of the lower suspension swing arm 11, the shock absorber 12 which is limited and fixed is avoided, the lower suspension swing arm 11 cannot rotate, and the shock of running is buffered through the shock absorber 12.

In some alternative embodiments, referring to fig. 1-8, the stop mechanism includes an upper fixed plate 6 and a lower stop plate 15.

The lower limiting plate 15 is hinged with the frame 1 through a third hinge shaft 5, a third hinge assembly is fixed on the frame 1 and comprises two opposite third fixing plates, and the lower limiting plate 15 is arranged between the two third fixing plates and hinged through the third hinge shaft 5.

The torsion spring 14 is synchronously hinged with the third hinge shaft 5, so that the rotation of the suspension lower swing arm 13 drives the lower limiting plate 15 to synchronously rotate.

In this embodiment, set up locating hole 7 on the upper fixed plate 6, can make the spacer pin 2 on the upper vehicle body insert through locating hole 7, make its location spacing, avoid between spacer pin 2 and the lower limiting plate 15 unable contact, avoid spacer pin 2 can move at will, lead to unable effect of playing spacing to lower limiting plate 15, make the effect of device inefficacy.

In this embodiment, the limiting mechanism further includes a limiting pin 2, and when the lower vehicle body is assembled, the limiting pin 2 passes through the positioning hole 7 on the upper fixing plate 6 and then abuts against the lower limiting plate 15, so that the rotation of the torsion bar spring 14 can be limited.

The limiting pin 2 can be assembled with limiting pins 2 of different lengths according to the weight of different vehicle bodies during reproduction.

As shown in fig. 3 to 4, when the weight of the vehicle body is moderate, the upper vehicle body B2 is in butt joint with the chassis a, and the stop pin 2 mounted on the upper vehicle body passes through the positioning hole 7 in the corresponding position on the upper fixing plate 6 on the chassis frame 1 to contact the torsion bar suspension system of the chassis.

The front end of the torsion bar spring 14 is hinged with the suspension lower swing arm 13 through a spline structure and is relatively fixed with the second connecting shaft 4, and when the outer side of the suspension lower swing arm 13 swings up and down, the front end of the torsion bar spring 14 and the second connecting shaft 4 in the suspension lower swing arm 13 synchronously rotate;

the tail end of the torsion bar spring 14 is hinged with the lower limiting plate 15 and the third hinge shaft 5 through a spline structure and is relatively fixed.

Under the action of gravity of the vehicle, the frame 1 has a sinking trend, at the moment, wheels are supported on the ground, the wheel center is relatively static, so that one side of the suspension lower swing arm 13, which is far away from the frame 1, is relatively static, and one side of the suspension lower swing arm 13, which is close to the frame 1, has a sinking trend, the whole body generates a rotating trend around the second hinge shaft 4 in the suspension lower swing arm 13, at the moment, the torque is loaded to the front end of the torsion bar spring 14, and is transmitted to the tail end through the torsion bar spring 14, so that the lower limiting plate 15 generates a rotating trend.

At the same time, the lower limiting plate 15 is abutted against the upper vehicle body limiting pin 2 and is limited to rotate, so that the torsion bar spring 14 generates torsion by self deformation and balances with the torsion acted on the inner hinge of the lower swing arm 13 of the suspension by the weight of the vehicle, and the vehicle is in an idle static balance state under the support of a suspension system.

As shown in fig. 5 to 6, when the weight of the vehicle body is heavy, the upper vehicle body B3 is butted with the chassis a, and the stopper pin 2 mounted on the upper vehicle body passes through the positioning hole 7 at the corresponding position on the upper fixing plate 6 on the chassis frame 1 to contact the torsion bar suspension system of the chassis.

When the limiting pin 2 with the limiting pin is assembled, the assembling length of the limiting pin 2 is longer, because the fixed position of the upper vehicle body on the vehicle frame 1 is consistent, the lower limiting plate 15 is pressed lower by the longer limiting pin 2, under the condition that the position of the lower swing arm 13 of the suspension is kept unchanged, the torsion bar spring 14 is deformed greatly, the generated torsion force is larger, and the weight of the heavier upper vehicle body is exactly counteracted, so that the chassis ground clearance is kept unchanged, and the situation that the chassis is pressed lower by the heavier upper vehicle body to influence the appearance posture and the trafficability of the whole vehicle is avoided.

As shown in fig. 7 to 8, when the weight of the vehicle body is light, the upper vehicle body B1 is butted with the chassis a, and the stopper pin 2 mounted on the upper vehicle body passes through the positioning hole 7 in the corresponding position on the upper fixing plate 6 on the chassis frame 1 to contact the torsion bar suspension system of the chassis.

When the limiting pin 2 is assembled, the assembling length of the limiting pin 2 is shorter, as the fixed position of the upper vehicle body on the vehicle frame is consistent, the shorter limiting pin 2 can raise the working position of the lower limiting plate 15, under the condition that the position of the lower swing arm 13 of the suspension is kept unchanged, the self deformation of the torsion bar spring 14 is smaller, the generated torsion force is smaller, the weight of the lighter upper vehicle body is just balanced, and thus, the ground clearance of the chassis is kept unchanged, and the condition that the chassis is lifted to be higher by the lighter upper vehicle body to influence the appearance posture and the travelling performance of the whole vehicle is avoided.

In some alternative embodiments, referring to fig. 1, the connection unit is a torsion bar spring 14, the torque generated by the suspension lower swing arm 13 is transmitted to the lower limiting plate 15 through the torsion bar spring 14, so that the lower limiting plate 15 rotates synchronously with the suspension lower swing arm 13, then the lower limiting plate 15 limits the rotation of the torsion bar spring 15 by supporting the limiting pin 2, so that the torsion bar spring 14 generates torsion force by itself in a deformation mode, and the torsion force is balanced with the torque acted on the hinge in the suspension lower swing arm 13 by the weight of the vehicle, so that the vehicle is in a proper posture suitable for the torsion bar under the support of a suspension system.

In this embodiment, one end of the torsion bar spring 14 is hinged to the second hinge shaft 4, and the other end is hinged to the third hinge shaft 5.

The torsion bar spring 14 is hinged with the second hinge shaft 4 on the suspension lower swing arm 13, one end of the suspension lower swing arm 13 is the front end, the suspension lower swing arm 13 is hinged with the second connecting shaft 4 through a spline structure and is relatively fixed, and when the outer side of the suspension lower swing arm 13 swings up and down, the front end of the torsion bar spring (14) and the second hinge shaft 4 in the suspension lower swing arm 13 synchronously rotate.

The torsion bar spring 14 is hinged with the third hinge shaft 5 on the lower limiting plate 6, one end of the lower limiting plate 6 is a tail end, and the torsion bar spring is fixedly connected with the third hinge shaft 5 through a spline structure.

The working principle and the working process of the application are as follows:

when the weight of the vehicle body is moderate, the upper vehicle body B2 is in butt joint with the chassis A, and the limiting pin 2 arranged on the upper vehicle body passes through the positioning hole 7 at the corresponding position on the upper fixing plate 6 on the chassis frame 1 and contacts with the torsion bar suspension system of the chassis.

When the weight of the vehicle body is heavy, the upper vehicle body B3 is in butt joint with the chassis A, and the limiting pin 2 arranged on the upper vehicle body passes through the positioning hole 7 at the corresponding position on the upper fixing plate 6 on the chassis frame 1 and contacts with the torsion bar suspension system of the chassis.

When the weight of the vehicle body is lighter, the upper vehicle body B1 is in butt joint with the chassis A, and the limiting pin 2 arranged on the upper vehicle body passes through the positioning hole 7 at the corresponding position on the upper fixing plate 6 on the chassis frame 1 and contacts with the torsion bar suspension system of the chassis.

In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present application and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

It should be noted that in this application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A skateboard chassis suspension adaptive adjustment device, comprising:

a suspension mechanism for transmitting torque and force generated by the frame (1) and wheels;

2. The skateboard chassis suspension adaptive adjustment device of claim 1, wherein:

the suspension mechanism and the limiting mechanism are both arranged on the frame (1).

3. The skateboard chassis suspension adaptive adjustment device of claim 1, wherein:

the suspension mechanism comprises an upper suspension swing arm (11), a lower suspension swing arm (13) and a shock absorber (12) arranged between the upper suspension swing arm (11) and the lower suspension swing arm (13).

4. A skateboard chassis suspension adaptive adjustment device as in claim 3, wherein:

the suspension upper swing arm (11) is hinged with the frame (1) through a first hinge shaft (3);

the suspension lower swing arm (13) is hinged with the frame (1) through a second hinge shaft (4).

5. The skateboard chassis suspension adaptive adjustment device of claim 4, wherein:

one end of the shock absorber (12) is hinged with a first hinge shaft (3) of the upper swing arm (11) of the suspension;

the other end of the shock absorber (12) is hinged with the suspension upper swing arm (11).

6. The skateboard chassis suspension adaptive adjustment device of claim 1, wherein:

the limiting mechanism comprises an upper fixed plate (6) and a lower limiting plate (15);

the lower limiting plate (15) is hinged with the frame (1) through a third hinge shaft (5).

7. The skateboard chassis suspension adaptive adjustment device of claim 6, wherein:

the upper fixing plate (6) is provided with a positioning hole (7).

8. The skateboard chassis suspension adaptive adjustment device of claim 7, wherein:

the limiting mechanism also comprises

The limiting pin (2) is arranged on the upper vehicle body, and can pass through the positioning hole (7) to contact the lower limiting plate (15).

9. The skateboard chassis suspension adaptive adjustment device of any of claims 1-6, wherein:

the connecting unit is a torsion bar spring (14).

10. The skateboard chassis suspension adaptive adjustment device of claim 9, wherein:

one end of the torsion bar spring (14) is hinged with the second hinge shaft (4), and the other end is hinged with the third hinge shaft (5).